Granted Patent
Utility
US 6,064,680 · App. 08/894,375
Attenuation-free optical connection
Inventor:
Dan Kallgren
Patented Case
View Patent ↗
Granted: May 16, 2000
Filed: Jan 20, 1998
Inventor
Dan Kallgren
Assignee (at issue)
Telia Company AB
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.